Reverse GIF

How to reverse a GIF

1. Press Choose image and pick a GIF.
2. Watch it play backwards in the preview.
3. Press Download GIF.

What reversing a GIF does

The frames are put in the opposite order: the last frame plays first and the first plays last. Each frame keeps its own timing, so a pause near the end of the original comes near the start of the reversed GIF. The size stays the same, and a transparent background stays transparent.

What a reversed GIF is good for

Things that un-happen: a spilled drink that flies back into the glass, a dive that lands back on the board, a tower of blocks that builds itself. Reversing also fixes a GIF that was saved the wrong way round.

For a boomerang, which plays forward and then back, reverse the GIF here and join the original and the reversed copy with Merge GIFs.

Reverse GIF limits

A GIF wider or taller than 1000 px is scaled down to 1000 px on its long side. A GIF with more than 300 frames is thinned to 300 or fewer, and a long GIF at a large size can be thinned further. The time of the skipped frames is added to the ones that stay, so the GIF runs just as long.

Every frame is written again, so the file can come out a little bigger or smaller than the original. The new size is shown under the button after the download.